# def s1():
#     return
# def s2():
#     pass
#
# def s3():
#     return 1,2,3,4
# a,b,c,d = s3()
# # 调用
# print(s1())
# print(s2())
# print(s3())

# 求和
def sum1(x,y):
    s1 = x + y
    s2 = x - y
    return s1,s2

# 调用
num1,num2 = sum1(10,15)
print(num1,num2)











